| 摘要 |
An advertisement display device mainly made up a housing having an upper chamber and a lower chamber, a motor disposed in the upper chamber, multiple gears disposed in a bottom of the lower chamber, and multiple three-face hollow columns positioned in the lower chamber and rotatably connected with the multiple gears and the motor. The motor is actuated to drive the multiple three-face hollow columns to rotate, and when each column has rotated 120 degrees the motor and the columns then stop, and an advertisement display area is formed to demonstrate advertising for a short period until the motor is actuated again whereafter a different advertisement is displayed.
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